Combined typewriting and computing machine



Dec. 1, 1931. H. L.. PITMAN COMBINED TYPEWRITING AND COMPUTING MACHINE Original Filed June 2. 1925 4 Sheets-Sheet l /m/m for:

Dec. 1, 1931. H, L plTMAN 1,834,731

COMBINED TYPEWRITING AND COMPUTING MACHINE @riginal Filed June 2, 1926 4 Sheetsheet 2 i by @/W 4 Sheets-Sheet 5 H. L. PITMAN COMBINED TYPEWRITING AND COMPUTING MACHINE Original Filed June 2. 1926 Dec. 1, 1931. H. l.. PITMAN COMBINED TYPEWRITING AND COMPUTING MACHINE Original Filed June 2, 1926 4 Sheets-Sheet 4 JNVI /m/e/y/far:

Patented Dec. 1,v 1931 j "UNITED-STATES1PATENT 6Fl-ICB 7 HENRY LLPITMANjp WESTFIELD, NEW JERSEY, AsspI'GNon, BY mEsNE ASSIGNMENTS, To ELLIOTT-FISHER coMPANxor Nnwyonx, Y., yA oonPonA'rIoN oF DELA-` WARE c `oolilmIN'Eni'cnrrnvvnnniNcf AND colurUTING lMACHINE orlginnl application` nlea :une 2, 1926, 'serial Nallalaa. Yinviamik and this application nlea November i Y V 11,1927. serialNo; 232,497.

This invention relates to vcombined typewriting and computing machines of thel Underwoodlrlanson type, andy patricularlyV to improvements therein ywhereby the usual functions of the machine'arefacilitated and j i accomplished with greater convenience to the Yoperator, and'whereby the costs of manufacturing and maintaining "said'machines are acomputing zone', Y

substantially reduced.

In said typeof of thetype-writer, when operated while/*the carriageis in a computing zone, set corresponding index-pins inrack-barslof acomputing mechanism that isblelow `thetype- Writer. These rack-'bars subsequently lrun the digitsindeXed thereinilito 'computing wheels. To enable anynume'ral-key to set an index-pin in any rack-bar, a so-called pinsetting frame isv interposed between mem# bers dependingk from thenumeralkey-levers and the index-pins on theirack-bars# l The 1 pin-setting frame includes pin-setting bars,v one for each` Anumeral-key,"arranged trans' y versely of the rack-barsand'over the indeX- Vals pins therein. Each pin-setting bar is depressibleby a-n'operation of a corresponding numeral-key, and, ,l when projected, is normally in advance ofthe corresponding transverse row of index-pins. setting bar to setan index-pin, the rack-bar in which the pin is `to beset must be slightly advanced,^ so that theindeX-pins therein are directly under-'the pin-setting bars. There is usually'a plurality of said rackfbars, and

they are advancedone after thejother in denominational order as the typewriter-carriage passes in letterfeeding steps through The various-featureszof the invention `are shown applied to a standard'machine,which has two sets kof computingwheels operated by two sets of rack-bars requiring tworsets of thrust-rods. `The upper ends of'saidrodsare arranged in tworows directly behind theupper ends of the usual rowy of denominational tabulating stops. From each of saidtwo rows a set of thrust-rodsisdirected toward a corresponding set of'rack-bars, a lset'of rackbars being arranged at each yside ofthe com-y '.tion causes contacts to close andcolnplete a machines the numeral-keys To enable the pin# occupied space between the two sets of rackbars.V Said power-driven means include an electric `motorgeared to the vusual operating cross-'shaft' of the computing mechanism. Tothis end,said shaft has mounted thereon "puting mechanism leaving a substantially un-k a gear sector meshing with a rack which,

forms part of a member mountedy for a reciprocating movement which is imparted to said "5 "member-in the usual manner by a revolving roller andslot-device, the slotbeing formed in said member. a right-angles to its direction of movement. and the roller being one end of*` awormand gear train driven by the electric motor throughthe usualA clutch. vSaid clutch f is'of, the type shown in the patent to A.- J.

Wood, No. 1,299,646, ydated April V8, 1919.

fDevising the power-drive in this way sothat it"V mayy be placed within the space occupied by the computing mechanism proper 4makes possible a compactv machine,which has the` advantage of beingvportable, of requiring lessy room and of beingeconomioally kmanufactured.; f

Another object cuit is automatically closed to start the motor simultaneously withthe engagement of the clutch for acomputing machine cycle, said circuit being automatically broken at the end of said cycle. As shown in ythe aforesaid 2.

patent to 'Wood, the clutch includes a driving ratchet directly geared to the motor and a rotatable, driven memberconnected to the computing mechanism'by the aforesaid roll- Eer and slotted member. The engagement of l driven member to be engaged by the ratchet.

As shown in said patent to Wood, said rotalot the present invention is pto provldelmprovedmeans `whereby a cirloo circuit to start the motor. These contacts are coniined within the clutch casing, and are practically inaccessible unless the clutch -asing is taken apart.

It isI another object of the present invention to provide means whereby contacts to close and open the motor circuit may be operated otherwise than by the rotation of the aforesaid disk, so that said contacts may be placed elsewhere than in the clutch casing. Contacts within the clutch casing besides being inaccessible are subjected to undesirable conta-ct with Athe lubricant in said casing.

There is provided accordingly a pair of con-v tacts, one of which .is spring-pressed and normally held separated from the other by a latch member. Said latch member is withdrawable by the same means that withdraw` the aforesaid -bolt to engage the clutch. This 'spring-praised Contact to be released and withdrawal of said latch member causes the close with a snap on the other Contact simultaneously with the engagement of the clutch. During the ensuing computing machine cycle the latch member by suitable means to be described is caused to move and overhaul the released contact, and be in position to retractsaid contact and thereby break the circuit at the end of said cycle. This retraction of the contact opens the circuit and is effected with a snap movement as will be shown.

' lt will be understood that the cycle is caused to be terminated at the end of one ievolutioii `of the clutch by permitting the aforementioned bolt tov intercept the usual projection as shown in said patent rlhis is a division of my application, Serial No. 113,133, .tiled June 2, 1926. l

yOther l'eatures'and advantages will hereinafte'iappear'. l lIn the accompanying drawings,

Figure 1 is a cross-sectional side elevation of an Underwood-Hanson combined typewriting .and computing' machine, showing features of the invention.

Figure 2 is a perspective view of the com puting mechanism, showingr features of the invention.

Figure 3 is a side View, showing the transmission clutch, motor switch and related parts in normal position.

Figure 4 is a side view, showing the transmission clutch, motor switch and related partsin their relative positions when said clutch has been engaged and the computingr mechanismV has been started on a. machine cycle.

AFigure 5 shows the vtransmissioii clutch, motor switch and related parts in their relative positions at the moment when said clutch has'been engaged by operation of the starting key.

Figure 6 is a perspective diagram showing the means whereby the clutch is engaged and the motor switch operated and controlled.

Figure 7 is ay diagram of the motor circuit.

Figure 8 shows details of the driving connection between the driven member of the clutch and the computing mechanism.

Figure 9 shows details of means for detenting the driven member of the clutch and related partswhen said member and parts are in idle positions.

Figure 10 shows means whereby the clutch mechanism is operated by the usual carriagecontrolled automatic starting devices.

In the ndeiwood-I-Ianson bookkeeping machine numeral keys and alphabet keys 16 swing key-levers 17 about a fulcrum 18, thereby causing bell-cranks 19 to swing about a fulcrum 2O and opeiate type-bars 21. Said type-bars when operated swing upwardly and forwardly about a fulcrum 23 to printagainst a platen 24. Said platen is revolubly mounted in a carriage 25 which is movable on rails 26 and 27 in a letter-feeding and reverse direct-ion.

The carriage is pulled in said letter-feeding.

,a loose dog 31, mounted on a dog-rocker 3i.

which also embodies a fixed dog 33. Said dog-rocker is pivoted at 34 for a rocking motion imparted to it by the universal bar 35. A rearwardv extension 3G of said universal bar is supported and guided by a U-shaped frame 37 pivoted at 38. The universal bar is actuated in the usual manner by a heel 39 of any operated type-bar. The usual Underwood denominational tabulating ineehanism includes a plurality of tabulating keys 40, which are mounted on key-levers 41 partly shown in Figure 1.

The rearward extensions, not shown, of said key-levers 41 when operated elevate the usual denominational stops 42 to cause the upper ends 43 thereof to be `projected into the pathV of the usual tabulating counterstops 44. Said counter-stops are settablel in the usual notched bar 45 supported between brackets 46 projecting from the typewritercarriage 25. The denominational stops 42 actuate the universal bar 50, which is mounted on a shaft 51 that is rotated to cause the engagement of the usual lspeed governor, not shown, whereby the speed of the carriage during a tabulating movement thereof is governed. Connection to said speed governor is effected by a link 52, partly shown, and an arm 53.

Each numeral key-lever has depending therefrom the usual stem 54. Said stem when a numeral key is operated is thrust downwardly to engage an arm 55, and thereby rotate a rock-shaft 56 of a pin-setting frame generally indicated at 57. There is Y Y Y .g 1,834,131

`4a` irock-shaft .,56for, every significant keyi" lever, and operation of said rock-shaft causes i' a corresponding pin-setting bar 58 to `bedepressed. The'pin-settingbars,of which there I' is one for every; significant numeral key-"- lever overlie a bankof index-pins 59, nine r: olf/Which are in each rack-bar 60. "The pinvsetting bars 58 are normally slightlyy forward of thecorresponding transverse rows of index-pins. Toenable an index-pin torbeset in any rack-bar, said rack-vbar-must` be advanced slightly, so thatthe pins therein lie* directly under the pin-setting bars.` The rack-bars are thus advanced or selected oneA after theother in denominational order as the typewriter-carriage moves through la comi,

puting zone.

Y yputing zone, and as the tappet overrides said upper ends 64:, one ortwo thrust-rods, each corresponding to a` dilerent vregister,-are

causedV to be depressed at the end of each letter-feeding step of the carriage throughv a computing zone.4 Thethrust-rods when de'-` pressed rotate levers "66,fconnected to, the 1lower endsof said thrust-rods. Said 'lower ends may be in theform of lugs 62 4having screw holes into which the end thrust-rods are threaded, said screw holes enabling acljustment of the effective lengths ofthethrust# a rods., .The levers 66 are mountedon a com# mon fulcrumi shaft 67, `and have arms 468 which engage arms 69v of transposing levers 70. Said transposing levers arefor the purpose of inverting theorder of operation between the thrust-rods andthe correspondingrack-bars., Said inversion 1s necessary because vthe typewriter-carriage moving in letter-feeding stepsactu'ates the thrust-rods `from right.; to left,` but the corresponding Vrack-,bars must be denominationally lselected and advanced in an order beginning from leftto right. v

Any arm 69 of each ofsaidvtransposmg levers 70 is substantially in the plane toward .which the corresponding thrust-rod .is nor `mally directed, and an arm 71 of the same lever is in .a plane adjacent to the ,corresponding rack-bar. Arms 69 and 71 of'each pair are connectedk by a U-shaped yoke72. 1 The yoles of the diierent leversvarywinV depth, as shown in Figure 2, and are disposed in groups, the yokes of eachgroup nest-ing. one within the other.V Rotation of one of the transposing levers yis effected when axthrustfrod 65 isl depressed. `This rotation causes a thrust-bar 7 3, vconnected tothe arm 71, to'be thrust forward and thereby. advance a. rack-bar by means of a projecting pin 74 fastened in the-.side of said rack-bar.

A rack-bar is held in its denominationallyadvanced position until, byoperatienei any end may be Withdrawn from the pin'74. By1-75 such Withdrawal everythrust'bar 73 and the train/of. parts leading to 'it areI silenced las pin-setting` elementsrby; operation of said bail-rod.V The bail-rod 77 isk 'supportedl b arms 79 fastened to a rock-shaft 80. Y

There is a separate bail-road 77, with supporting farms and shaft, for each set of rackbars.` The bail-rods are connected for simultaneousoperation by al U-shaped1frame82 v loosely mounted upon a shaft 83 and having-f at eachend a forked arm 84 Whichengages :the bail-rod 77. The transposinglevers70 .are mounted `on a common ulcrum-shaft 7 05L y.that maybe suitably `supported from the ,f-cross-member. 86. v

may be looselymounted is supported in bearings' 85 erected upon the cross-member ."(not shown) Whichconnects the usual side frames 87 of Whichthe'left-handfone is shown in `Figure `2. The lefthand rock-shaft has fastenedto it-an arm 88 which has at its en'd l`apinff83. Said pinf881 is engagedby "an arm 890i the usual lever 90, which is Arotated from its'normal position at the begin-` ning of a lcomputing rriachineeycle and is latched by an arm 91, the end`of-whic`h falls behind a block 90,y fastened to ysaid lever 90. At fthe'end `of said computing machine cycle, "thearm 91 isjwithdrawn. fromjthfelever 90,V byiineans' of an'extension 92 of saidV arm 91. Said extension 92 isfstruck by a tab 93 of the kleft'supporting bracket 94 of they general operator 95 atthe end ofsaid' computing ma chine cycle', tlierebycausing the arm 91` to Vbe rotated "and Withdrawn as stated. To rotatethelever 90 at the beginning of the computing machine cycle, said ,lever is provided with an arm 96 having at the end there-A cfa` roll `97. vSaid roll normally lies in a notch98in the let-h'andrack 99 of the general Hoperator frame. When 'the general operator 95 advances,v by means of said rack a computing lmachine cycle theleverf90 is The shaft 83 .onvvhich the U'shaped frame 99, the roll 97is displaced and caused to ride i wh ich is mounted at the rear of said computing mechanism in the substantially unoccupied space betweenthe two sets of rack-bars. Besides furnishing power to drive the computing mechanism, said motor 160 may, by means of a belt 161, be connected to drive the usual carriage-return mechanism, not shown. The motor is operated onlywhen a clutch that connects said motor to the computing mechanism is engaged. Said clutch is of the type shown in the aforesaid patent to Wood, and includes a worm 165 keyed to a shaft 166 which is flexibly coupled by the usual means (not shown) to amotor-shaft167. The worm 165 meshes with the usual worm-wheel 168 which is rigidly connected to a ratchet 169. Said ratchet by means of I pawls 170 may drive a member 171 uponwhich said pawls yare mounted. The pawls 170 are normally held out of engagement with the ratchet 169 lby pins 172 driven into a disk 173, which is normally held in such position as to keep the pawls 170 disengaged from said ratchet 169. To hold said disk 173 so that the pawls 170 are disengaged, there is provided the usual bolt 174, and in the present invention said bolt is formed upon an arm 175, which is fastened near one end of a shaft 176 that has its bearing in a portion of a frame 177 that includes a clutch casing 178. A torsion spring 179 between the arm 175 and the frame 177 is effective to urge the bolt 174 into the path of a projection 180 that is formed upon the disk 173. The clutch is engaged, in the manner illustrated in the aforesaid patent to Wood, when the bolt 174 is caused to be withdrawn by operation of the usual starting key 181. The means by which said starting key effects the withdrawal of the bolt 174 include the usual starting key-lever 182 connected to the starting key-stem 183. Said starting key-lever is effective .to rotate the shaft 176 to effect withdrawal of the bolt 174 by means of an arm 184 fastened to said shaft 176, the arm 184 being engaged by a stud or roll 185 which projects from. the side of the startingkey-lever 182. The starting key-lever 182 is pivoted in the usual man# ner to the right-hand computing machine frame (not shown) at 186.

Operation of the starting key 181 not only withdraws the bolt 174 to engage the clutch, but the circuit to the motor is also closed and vertically movable bar 190 which is notched toembrace an insulating block 191 fastened upon thelever 188. To constrain said bar 190 to move up and down in order to open and close the contacts 189, said bar is pivotally `fastened at one end to an arm 192 which is mounted upon a shaft 193. Said shaft 193 is pivotally supported between the side walls of the casing 194 of 'the contact device. The lower end of said bar 190 is constrained to move in a slot in the bottom wall of said casing 194. The arm 192 has at its outer end a tab 196, by means of which said arm is upheld by a hook-shaped member 197 that is pivoted upon one end of an arm 198. The hook-shaped member 1974 is connected by a link 199 to the'arm 175 upon which the bolt 174 is formed. Consequently, when said bolt is withdrawn to engage the clutch, the hookshaped member 197 is withdrawn from the tab 196. This withdrawal of the hook-shaped member 197 from the tab 196 permits the arm to which the bar 190 is fastened to rotate with a consequent closing of the contacts 189 and starting of the motor, said rotation being urged by a torsion spring 202, one end of which reacts against `Vthe contact lever 188, and the other end of which reacts against a suitably insulated portion'of the casing 194. In this manner, the clutch is engaged and the motor started, and, inthe ensuing cycle of the computing mechanism,`the general operator which includes the rack 99 moves forwardly in the direction of the arrow in Figure 6. This, as already explained, causes the lever 90 to rotate when the roll 97 thereof is ldisplaced from the notch. 98. Rotation of the lever 90 causes rotation of a Ishaft 203, to one end of which the arm 198 is fastened. To rotate the shaft 203 by means of the lever 90, said shaft, at the other end thereof adjacent said lever 90, has fastened to it an arm 204, at one end of which is a pin 205 that follows the roller-arm of said lever 90. Consequently, when said lever 90 is displaced during a computing machine cycle, the shaft 203 is free to rotate countercloclnvise of Figure 6,

- under the influence of a suitable spring 203,

and said rotation causes the hook-shaped member 197 on the end of the arm 198 to move downward with said endy to overhaul the tab 196 and be in position to retract the arm 192, Aof which said tab is a part, and thereby effect separation of the contacts 189 at the end of a .computing machine cycle.

resa-'131i This separation is eifectedfwitha snapinove-L ment at the endof said cycle when the arm 91. releases the lever 90 at the endof acomputing machine* cycle in ai manner already explained-- y. Y

vThe computing mechanism l inthe present form of 'the invention is connected .to the/ driven clutch-member 171 vmeans which include a disk 206, which may beconnected .to said driven member 171vas shown inl Figure `8. Eccentrically fastenedwto theouter sidefof the disk 206 is a roller. 207. Whenthe computing mechanism is in its normal orat rest position, said roller is on Aa line- ',that passesthrough the centerof said disk y atedindependently of saidrolle'r, the mem- Vformed by. ythe driven memberv 171 and. the

551: so that it may underlie the head of the ber 208 is provided with alongitudinal slot 209 that extends in the direction of said move ment of the general operator. The slot 209 intersects at right angles a slot 201 by means of which and the roller 207 saidmember 208 is given its reciprocating movement. The

e, rearward end of the kmember 208, when said y member is in its normal'position, is support-- ed-andretained by a block 210 that is supported'and retained by a vshoulder-'screw 211 that isthreaded into the center ofthe disk i206 and'rotatestherewith. V,Said block 210 lits the slot 209`l ofthe Amember208. The forward-end of thel meinber-208 has'a longitudinal slot 212 which fitsfover asuitable guidel 213 erected upon a cross-member 214, Figure 1, of the computing mechanism. AThe member 208 has formedupon its Lupper surface a rack 215, which meshes with a sector 216, -fastened to the usual operating shaft i 120 of the computing mechanism. Said shaft j has at either end the usual sector 218,. which,

by means of an intermediate pinion 219 meshing with [each sector, drives the rack 99,l which isprovided on eitherl side of the machine, and thereby ythegeneral operator 95.v

Adetent is ,providedto locate the unit parts connected thereto in its normal or idle position when the-clutch is` knot engaged.

Said 4detent consits of '-a suitably heavy spring'222, one end of whichy is perforated shoulder-screw 211, as sho-wn in Figure 9. The other end of 'the spring overlies. and presses the suitably-shaped end of a detentpinj223 intol a' corresponding recessformed" in the, end of a vstud 224, yupon which the roller `207 is pivoted. The detent-pin fits .in

a counterbored hole 225-,that isyformed in an extension `of the block`2101over the roller i207.V The pinl 223 has at itsQouter 'endaf f gram.

shoulder" which fits a'hole inthe endof the detent-spring 222. vAnother shoulder226of the detent-pin 223 fits the eounterbore ofthe hole 225 and prevents saidy pin' from vbeing v thrust entirely throughvthe block 10.` e fr A computing machine cycle maybe automatically initiated bythe usual means shown fin thepatent to A. Gr. Kupetz, No. 1,452,162,"

dated-April 17 1923, said means including a lever V220 which is actuatedby a 'movement` of the typewriterfcarriage when said carriage Y reaches the `end of a computing zone- To` actuate said lever 220 in this manner,onefof the tabulating stops44, in thefu'sual manner, engages the end `of said lever and rocks it.: By means of Aalink 221`said lever, when rocked,'cause s the vusual partsshown in yFigure 10 to be` operated. Said partsincludef thelverticallvmovable bar 228, whieh,when' operated by with-drawing thelatch-bar'229 from the end230of Va lever 231, actuates an arm 232 of the present invention, and Athereby effects the engagement of the clutch' and,

the starting of the motor, said arm232 bein fastened to the endlof the shaft`176. Said-Y' lever 231 is silencedby the operation of the non-computing leverl (not shown), which,L when operated, causes a bar 124 tomove the usual lever 126-to thwart the operation of said lever 231. The usual attachments, some of whichV are notshown, VKon the lever "126 providev the obstruction which opposes4 kthe. op-

part of the "means whereby the denominational selectionof rack-bars 60 is silenced.

f The wiringbetween the contact-device187 and the motor'160 4is indicated at 251, FigureA 1. vA plug 252 is included in said wiring, and

the usual connection to the line may bemadey Figure7 shows a Wiring dia-V to said plug.

The computingme'chanisin be manuallyoperated by r`thevusual handle 253,.indi: cated by the dotted line in Figure-'1. 4Said' to Ian operating cross-shaft 120.

'Variations mayv be resorted `to 'withinthen scope ofjthe invention, and portions of they improvements maybe used: without others.

, Having thusu describedmy invention, I

claim: i f- 1. In a drivingmechanism,fora computing machine or the like, the combination with aj shaft rotatable lin' reciprocating 'l directions to operatesaid machinejand a handle oper- 5 ativelyconne'cted to said shaft, of a yreciproeating member having a; vertical. slot and operatively connected tofsaid shaft,`arot'atz able driving member, and an eccentric-pin driven thereby slidably'f l"movable/fin' said f slot whereby said .driving memberiisyeffectivey to drivesaid 'reciprocating member, s said reciprocating' member being formed with an additional slotlfo'r saidl pin whenatfrestilfl)v eration ofsaid lever "231.k The Vlever 126V isV provided withyanarm 127 which 'forms a^ `ll handle 253 is attached in the. usual manner so that said shaft may be rotated by saidy handle independently of said driving member When said driving member is in its normal idle position, Without displacing said driving .member or pin.

2. In a driving mechanism for a computing machine or the like, the combination With a shaft rotatable in reciprocating directions to operate said machine, and a handle opertively connected tosaid shaft, oi' a reciprocating member operatively connected to said shaft, a driving member' including a pin movable ina curvilinear path, and means Whereby the curvilinear motion of said driving riiemberactuates the latter having a slot peridle position, Without displacing the same 3. In a driving mechanism for a computing machine or the like, the combination with a shaft rotatable in reciprocating directions to operate said machine, and handle operatively connected to said shaft, of a driving member capable of revolving in a curvilinear path, and a reciprocating member operatively connected to said shaft and having a formation coacting With said `driving member, s0 that the curvilinear movement of said driving member is translated into the reciprocating movement of said reciprocating member, said reciprocating member further having a slot that extends both sides of said formation Where said driving member stands in its normal idle position, so that said shaft to which said reciprocating member is connected may be rotated by said handle independently of said driving member Without displacing said driving member. y

4. In a driving mechanism for a computing machine or the like, the combination with a reciprocating member and an eccentricallymovable .member normally in an idle position, said eccentrically-movable member being capable of' actuating said reciprocating member, of means whereby said eccentrically movable member is detented in its idle position.

V5. In a driving mechanism for a computing machine or the like, the combination with a reciprocating member andv van eccentrically-movable member normally in an idle position, said eccentrically-movable member beingcapable of actuating said reciproeating member, of means whereby said eccentrically-movable member lis detented in its idle position, said means consisting of a resilient member, a detent pressed by said resilient member to coact with said eccentrically-movable member, and means for retaining said resilient member and said detent.

6. In a driving mechanism for a computing machine or the like, the combination with a reciprocating member and an eccentrically-movable member normally in an idle position, said last-mentioned member being capable of actuating said reciprocating meinber, of means whereby said eccentricallyinovable member is detented in its idle position, said means consisting of a resilient member, a detent pressed by said resilient member to coact with said eccentrically-movable member, and means for retaining said resilient member and said detent, said last-y mentioned means being adapted to slidably support one end of said reciprocating member.

7. In a computing machine, the combination With a motor-drive, a hand-drive and a. reciprocating member for driving the machine connected to and moved by said handdrive and effective to receive motion also from the motor-drive, of means associated with said member to make ineffective the motor-drive during the time the hand-drive is being used.

8. In a computing machine, the combination With a motor-drive, a hand-drive and a reciprocating member connected to and moved by said hand-drive and effective to receive motion also from the motor-drive, of automatic means to make the hand-drive ineffective to actuate the motor-drive during the time the hand-drive is being used.

9. Ina 4computing machine, the combination with a motor-drive, a hand-drive'and a reciprocating rack member for driving the machine, and said hand-drive including a pinion operatively connected to the rackmember, of an eccentric device driven by said motor-drive actuating the member, and means to make the member ineffective to actuate the motor-drive during the time the hand-drive is being used.

l0. In a computing machine, the combination with a motor-drive and a hand-drive, of a rectilinearly movable reciprocating member provided With tWo elongated openings of the same Width, an eccentric pin drivenk rocatin g member operatively connected to the general operator and capable ofreceiving motion selectively from the motor-drive or from the hand-drive, of means includedin i said member effective to make ineffective the motor-drive When'hand-driveis operated and make ineffective the hand-,drive `When the motor-drive is operated. Y

12. In a drive for a computing machine having a general operator, the combination with a motor-drive and a hand-drive, of a reciprocating member connected to the general operator and capable of receiving motion selectively, at the will ofthe operator, from the motor-drive or from the'hand-drive, a bearing for said member to guide the lsame in a rectilinear path, said member having a horizontal slot and a vertical slot, and a single pin, eccentrically driven, and capable of entering either slot, the pin being eiective to HENRY L. PITMAN.

reciprocate in the vertical slot When it drives the member, the horizontal slot being bestride the pin during the manual reciprocation of the member when the pin is inactive.

13. In a drive for a computing machine having a general operator, the combination with a motor-drive and a hand-drive, of a reciprocating member eii'ective'toactuate the operator, the member having an elongated horizontal opening, an eccentrically operated pin in the opening, and a vertical elongated opening in the member extending above and belovT the position Where the pin comes to rest, the horizontal opening forming a path for the pin when the member is reciprocated by hand, the vertical opening forming a path for the pin when the member is being reciprocated by the motor-drive.

14. Ina computing machine, the combination of a motor-drive, automatic means to stop the same inra definite rest-position, a

hand-drive, a reciprocating member connect- Y ed to and moved by said hand-drive and effective to receive motion also from said. motor-drive, When set in a position corresponding With said rest-position, and means ineluded in said member to make the motordrive ineiiiective When the hand-drive is used and the reciprocating memberis moved ont of said position.

15. In a driving mechanism for a computing machine orthe like, the combination With a reciprocating member, of an eccentrically movablemember normally in an idle position, said member being effective to reciprocally move ina path formed in the reciprocating member to reciprocally move the same, the reciprocating member having a slotted open'- ing each side of said path for the ecentrically movable member tojenter, when in its idle position, during the time that Vsaid Vmember is being manually operated.

16. In a drive for a computing' machine sol esk

having a general operator, the .combina-` Y tion with a motor-drive and a hand-drive, of a reciprocating member effective to actuate the operator, the member having an elongated vertical opening and an eccentrically-operated pin included in 'said motor-drive and iso 

